996190081 has 2 divisors, whose sum is σ = 996190082. Its totient is φ = 996190080.

The previous prime is 996190061. The next prime is 996190163. The reversal of 996190081 is 180091699.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 994771600 + 1418481 = 31540^2 + 1191^2 .

It is a cyclic number.

It is not a de Polignac number, because 996190081 - 2¹³ = 996181889 is a prime.

It is a super-2 number, since 2×996190081² = 1984789354965573122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (996190061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498095040 + 498095041.

It is an arithmetic number, because the mean of its divisors is an integer number (498095041).

Almost surely, 2^996190081 is an apocalyptic number.

It is an amenable number.

996190081 is a deficient number, since it is larger than the sum of its proper divisors (1).

996190081 is an equidigital number, since it uses as much as digits as its factorization.

996190081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 43.

The square root of 996190081 is about 31562.4790059336. The cubic root of 996190081 is about 998.7284107461.

The spelling of 996190081 in words is "nine hundred ninety-six million, one hundred ninety thousand, eighty-one".